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Added source adapter for byte streams.

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This commit is contained in:
Mark Fisher
2008-01-11 22:38:55 +00:00
parent 2b288470e7
commit 27b4912415
4 changed files with 303 additions and 0 deletions
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169
spring-integration-core/src/test/java/org/springframework/integration/adapter/stream/ByteStreamSourceAdapterTests.java Normal file
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/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.integration.adapter.stream;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import java.io.ByteArrayInputStream;
import org.junit.Test;
import org.springframework.integration.channel.MessageChannel;
import org.springframework.integration.channel.SimpleChannel;
import org.springframework.integration.message.Message;
/**
* @author Mark Fisher
*/
public class ByteStreamSourceAdapterTests {
@Test
public void testEndOfStream() {
byte[] bytes = new byte[] {1,2,3};
ByteArrayInputStream stream = new ByteArrayInputStream(bytes);
MessageChannel channel = new SimpleChannel();
ByteStreamSourceAdapter adapter = new ByteStreamSourceAdapter(stream);
adapter.setChannel(channel);
adapter.start();
int count = adapter.dispatch();
assertEquals(1, count);
Message<?> message1 = channel.receive(0);
byte[] payload = (byte[]) message1.getPayload();
assertEquals(3, payload.length);
assertEquals(1, payload[0]);
assertEquals(2, payload[1]);
assertEquals(3, payload[2]);
Message<?> message2 = channel.receive(0);
assertNull(message2);
adapter.dispatch();
Message<?> message3 = channel.receive(0);
assertNull(message3);
}
@Test
public void testEndOfStreamWithMaxMessagesPerTask() throws Exception {
byte[] bytes = new byte[] {0,1,2,3,4,5,6,7};
ByteArrayInputStream stream = new ByteArrayInputStream(bytes);
MessageChannel channel = new SimpleChannel();
ByteStreamSourceAdapter adapter = new ByteStreamSourceAdapter(stream);
adapter.setChannel(channel);
adapter.setBytesPerMessage(8);
adapter.setMaxMessagesPerTask(5);
adapter.start();
int count = adapter.dispatch();
assertEquals(1, count);
Message<?> message1 = channel.receive(0);
assertEquals(8, ((byte[]) message1.getPayload()).length);
Message<?> message2 = channel.receive(0);
assertNull(message2);
}
@Test
public void testMultipleMessagesWithSingleMessagePerTask() {
byte[] bytes = new byte[] {0,1,2,3,4,5,6,7};
ByteArrayInputStream stream = new ByteArrayInputStream(bytes);
MessageChannel channel = new SimpleChannel();
ByteStreamSourceAdapter adapter = new ByteStreamSourceAdapter(stream);
adapter.setBytesPerMessage(4);
adapter.setMaxMessagesPerTask(1);
adapter.setChannel(channel);
adapter.start();
int count = adapter.dispatch();
assertEquals(1, count);
Message<?> message1 = channel.receive(0);
byte[] bytes1 = (byte[]) message1.getPayload();
assertEquals(4, bytes1.length);
assertEquals(0, bytes1[0]);
Message<?> message2 = channel.receive(0);
assertNull(message2);
adapter.dispatch();
Message<?> message3 = channel.receive(0);
byte[] bytes3 = (byte[]) message3.getPayload();
assertEquals(4, bytes3.length);
assertEquals(4, bytes3[0]);
}
@Test
public void testLessThanMaxMessagesAvailable() {
byte[] bytes = new byte[] {0,1,2,3,4,5,6,7};
ByteArrayInputStream stream = new ByteArrayInputStream(bytes);
MessageChannel channel = new SimpleChannel();
ByteStreamSourceAdapter adapter = new ByteStreamSourceAdapter(stream);
adapter.setChannel(channel);
adapter.setBytesPerMessage(4);
adapter.setMaxMessagesPerTask(5);
adapter.start();
int count = adapter.dispatch();
assertEquals(2, count);
Message<?> message1 = channel.receive(0);
byte[] bytes1 = (byte[]) message1.getPayload();
assertEquals(4, bytes1.length);
assertEquals(0, bytes1[0]);
Message<?> message2 = channel.receive(0);
byte[] bytes2 = (byte[]) message2.getPayload();
assertEquals(4, bytes2.length);
assertEquals(4, bytes2[0]);
Message<?> message3 = channel.receive(0);
assertNull(message3);
}
@Test
public void testByteArrayIsTruncated() {
byte[] bytes = new byte[] {0,1,2,3,4,5};
ByteArrayInputStream stream = new ByteArrayInputStream(bytes);
MessageChannel channel = new SimpleChannel();
ByteStreamSourceAdapter adapter = new ByteStreamSourceAdapter(stream);
adapter.setBytesPerMessage(4);
adapter.setMaxMessagesPerTask(1);
adapter.setChannel(channel);
adapter.start();
int count = adapter.dispatch();
assertEquals(1, count);
Message<?> message1 = channel.receive(0);
assertEquals(4, ((byte[]) message1.getPayload()).length);
Message<?> message2 = channel.receive(0);
assertNull(message2);
adapter.dispatch();
Message<?> message3 = channel.receive(0);
assertEquals(2, ((byte[]) message3.getPayload()).length);
}
@Test
public void testByteArrayIsNotTruncated() {
byte[] bytes = new byte[] {0,1,2,3,4,5};
ByteArrayInputStream stream = new ByteArrayInputStream(bytes);
MessageChannel channel = new SimpleChannel();
ByteStreamSourceAdapter adapter = new ByteStreamSourceAdapter(stream);
adapter.setBytesPerMessage(4);
adapter.setShouldTruncate(false);
adapter.setMaxMessagesPerTask(1);
adapter.setChannel(channel);
adapter.start();
int count = adapter.dispatch();
assertEquals(1, count);
Message<?> message1 = channel.receive(0);
assertEquals(4, ((byte[]) message1.getPayload()).length);
Message<?> message2 = channel.receive(0);
assertNull(message2);
adapter.dispatch();
Message<?> message3 = channel.receive(0);
assertEquals(4, ((byte[]) message3.getPayload()).length);
assertEquals(0, ((byte[]) message3.getPayload())[3]);
}
}